4x-7=5x-(x+21)

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Solution for 4x-7=5x-(x+21) equation:


4x-7=5x-(x+21)

We simplify the equation to the form, which is simple to understand 
4x-7=5x-(x+21)

Remove unnecessary parentheses
4x-7=5x-1x-21

We move all terms containing x to the left and all other terms to the right. 
+4x-5x+1x=-21+7

We simplify left and right side of the equation. 
0x=-14

0=-14

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

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